Actually it asked me thus:

Error:

Needed msys2 tarballs are missing. You have a few options to get them,

  * run configure with the --enable-tarballs-autodownload option

So I did as requested and ran configure with that flag.  Success:

checking for path to top of build tree... C:/code/HEAD

configure: Checking for Windows toolchain tarballs...

######################################################################## 100.0%

configure: Extracting Windows toolchain from archives (may take a while)...

configure: In-tree MingW-w64 tree created

configure: Making in-tree perl tree

configure: In-tree perl tree created

checking whether the C compiler works... yes

checking for C compiler default output file name... a.exe

Then I validated from scratch

sh validate --fast

and got the error I reported.

I suppose I could delete ghc-tarballs and try again.  I’ll do that when I’m next connected.

In case it  helps, the lines in unix64.S that are being rejected are

      .type      ffi_call_unix64,@function

…

      .size    ffi_call_unix64,.-ffi_call_unix64

..

      .type     ffi_closure_unix64,@function

…

      .size ffi_closure_unix64,.-ffi_closure_unix64

…

      .section      .eh_frame,"a",@progbits

Simon

From: Phyx [mailto:lonetiger@gmail.com]
Sent: 09 March 2017 16:38
To: Simon Peyton Jones <simonpj@microsoft.com>; ghc-devs@haskell.org
Subject: Re: Windows build failing in a new way

Hi Simon,

As of this morning the Windows build was working fine https://github.com/Mistuke/GhcWindowsBuild/commit/aa6906b2535224721d8b049cee3edcd938c3e951 those are my nightly logs for last night at commit a02b80f

That error seems to be coming from gcc and not ghc. We did update the crt and maybe the scripts didn't do the right thing. Could you try nuking ghc-tarballs and trying again? Of course running with - -enable-tarballs-autodownloads on.

Tamar

On Thu, 9 Mar 2017, 16:28 Simon Peyton Jones via ghc-devs, <ghc-devs@haskell.org> wrote:

My windows build is more broken than usual.  I can’t even build a GHC.

Please, could someone fix this?  I’m getting desperate.

Simon

libtool: compile:  C:/code/HEAD/inplace/mingw/bin/gcc.exe -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -Wall -Werror -fno-stack-protector -w -fexceptions -MT src/x86/ffi64.lo -MMD -MP -MF src/x86/.deps/ffi64.Tpo -c ../src/x86/ffi64.c -o src/x86/ffi64.o

depbase=`echo src/x86/unix64.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\

/bin/sh ./libtool    --mode=compile C:/code/HEAD/inplace/mingw/bin/gcc.exe -DHAVE_CONFIG_H -I. -I..  -I. -I../include -Iinclude -I../src  -I. -I../include -Iinclude -I../src -Wall -Werror -fno-stack-protector -w -MT src/x86/unix64.lo -MMD -MP -MF $depbase.Tpo -c -o src/x86/unix64.lo ../src/x86/unix64.S &&\

mv -f $depbase.Tpo $depbase.Plo

libtool: compile:  C:/code/HEAD/inplace/mingw/bin/gcc.exe -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude -I../src -I. -I../include -Iinclude -I../src -Wall -Werror -fno-stack-protector -w -MT src/x86/unix64.lo -MMD -MP -MF src/x86/.deps/unix64.Tpo -c ../src/x86/unix64.S -o src/x86/unix64.o

../src/x86/unix64.S: Assembler messages:

../src/x86/unix64.S:45: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:204: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:208: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:326: Error: junk at end of line, first unrecognized character is `f'

../src/x86/unix64.S:334: Error: junk at end of line, first unrecognized character is `,'

make[5]: *** [Makefile:1335: src/x86/unix64.lo] Error 1

make[5]: Leaving directory '/c/code/HEAD/libffi/build/x86_64-pc-msys'

make[4]: *** [Makefile:1596: all-recursive] Error 1

make[4]: Leaving directory '/c/code/HEAD/libffi/build/x86_64-pc-msys'

make[3]: *** [Makefile:730: all] Error 2

make[3]: Leaving directory '/c/code/HEAD/libffi/build/x86_64-pc-msys'

make[2]: *** [Makefile:608: all-all] Error 2

rts/ghc.mk:494: rts/dist/build/.depend-v-l-debug-thr-thr_debug-thr_l.c_asm: No such file or directory

make[1]: *** [libffi/ghc.mk:115: libffi/stamp.ffi.static.build] Error 2

make: *** [Makefile:127: all] Error 2

/c/code/HEAD$

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